Window grating



April 9, 1935. B. A. MCGUINNEss WINDOW GRATING Filed Sept. lO, 1934 1,1 Fi .a Fg-g3 11g-9.41

m T m V N @MMA A ATTORNEY Patented Apr. 9, 1935 UNITED ASTATE param OFFICE 4 Claims.

This invention relates -to windowgratings for use in preventing would-be intruders from entering through windows or other openings, and more particularly to a grating of the type in which the bars may be readily moved to and from the window barring position.

I1; has been proposed heretofore to provide gratings in which'the bars may be moved from a windowbarring position to a stored position at a side or end of the window and these grating bars are frequently connectedr` by pivoted links adapted to limit the distance between the bars and to maintain them in substantially parallel relation to each other asfthey are moved to and from thewindow barring position. These folding links, however, occupy considerable space when the bars are moved to their inactive or stored position adjacent'the window.` 4

The present invention therefore pertains to a window grating provided with bars supported for movement to and from the window barring positionand having co-operating rack and pinion means associated with the bars and operable to retain the bars in parallel relation with` each other as they are moved along the barsupporting means. I. Y

A more specific form of the inventionA resides 'in a seriesv of separate grating bars each provided with pinions or small gears attheir opposite ends and in guide rails for supporting these bars for movement to and froml the window barring position, each rail has associated therewith a rack which co-operates with thepinionsof the bars to maintain the bars in parallel relationnto each other as they are moved along the guide rails. Ay further feature of the invention resides in locking means for lockingthe bars along lthe rails in spaced relation to each other.

Other features of the invention and novel combination of parts in addition to the above will be hereinafter described in connection with the accompanying drawing which illustrates one good, practical form of the invention.

In the drawing:

Fig. l is a front elevation of a window with a grating of the present invention and shows the bars in the window barring position.

Fig. 2 is a similar View showing the bars in the inactive or stored position at one side' of the window. f

Fig. 3 is a vertical sectional View through the window of Fig. 1.

Fig. 4, on a larger scale, is a transverse sectional view through the upper and lower bar supporting rails.

provided Fig. 5 is a top plan view of the lower guide rail, the grating bars being shownin section.

Fig. 6 is a plan view of a strip for locking the bars in the window barring position; and

Fig. '7 is a sectional view taken on the line 1-1 of Fig. 4.

The protecting grating of the present invention may be used in connection with windows of the ordinary home ory other buildings, and while this protecting grating has been shown and described herein in connection with windows it is to be understood that it may be employed in connection with doors or other openings where its protection is desired.

The window frame shown which may be of the usual construction has the sides I0, top portion II, and sill or lower portion I2, and in this window frame are slidably mounted the upper sash i3 and lower sash I4.

The window grating of the present invention is formed of the grating bars I5 that are supported for movement from the window barring position of Fig. 1 to their inactive or stored position of Fig. 2. These bars in the construction shown are supported in a vertical position and extend throughout the length of the Window from the lower portion of the frame I2 Ito the upper portion Il and the bars are supported at their upper end by the guide rail Iii and at their lower end by 'the guide rail I'I. The upper guide rail is conveniently secured by screws or the like to the under face of the frame portion I I, and the lower rail il may be similarly secured by screws I8 to the upper face ofthe sill board |21.

An important feature of the present invention,

as above stated, is to provide means for main-` taining the bars I5 in parallel relation to each other as they are moved along the guide rails IE5 and I? so that one barcannot be shifted to an inclined position in the window framel and cause its ends to be disengaged from the guide rails. Y

In lthe embodiment of the invention shown thisobject ofthe invention is secured by provid- Aing the upper guide rail Iii kwith a rack I9 andv the lower guide rail I'I with a slmilarrack 20 and by providing a pinion or small gear 2I at the upper and lower end of each grating bar I5, the arrangement being such that thesepinions are held in mesh with their respective'racks as the bars i5 are moved to and fromthe window barring position. j

In the construction shown the pinions 2| are formed by cutting teeth in the end portionsof the bars I5, as will be apparent from the drawing. These teeth 2 I are held in engagement with the upper rack I3 by the guide strip 22 which is preferably bent so that it has the shape in cross section best shown in Fig. 4, and the upper hori- Zontally extending portion of the strip 22 is rigidly secured by screws 23, or other means, to the rack I9, while the downwardly extending portion of this strip is provided adjacent its lower edge with an inwardly extending rib 24 which bears upon the smooth cylindrical surfaceof the rod I5 below the teeth of the pinion 2 i. As a result of this construction the portion B4 provides a straight guiding edge that co-operates with the rounded portion of the bar to guide the bar along.,

the rail I and hold its teeth properly engaged with the rack i3.

It is important that means be. provided for locking the bars I5 spaced alongthe guide rails I6 and I1 in the windowbarring position, and. this is accomplished in the construction shown,

by providing the lower guide rail I1 with the barloclring strip 25 bestshownfin Fig. 6.

Thelower guidewrail I1jis therefore provided with ai guidingrstrip-- which is conveniently given the hollow` channeled construction best shown inu Fig. 4, the channel portion of which serves to house and slidably support the` locking strip25.v The channelstrip 2S has a horizontal portion thatpextends under the rack 2D and is rigidly secured thereto by screws similar to the screws-23gabove mentioned and an upwardly extendingportion ofthe strip 26 is provided with thenppen horizontally extending portion 21, the edge of whichengages the bars I5 above the teeth of the pinion 2l and serves to guidevthe barsand; hold the teeth at their lower end in meshwthethe rack 20- TheA locking strip 25 is mounted within the channeled portion of the strip 26 for sliding movement into and out of locking engagement W-iththe bars I5., and in the construction shown the grating bars are locked in their window barring position by providing in one edge of -the strip 25 the bar receiving notches or arcuate portions ,28 adapted to partially embrace each lower pinion 2I as will be apparent from Fig. ,7. The movement of the strip 25 in to and out of locking engagement withthe bars I5- is secured in the-construction shown `by `providing the strip 25 withrtwoI or more inclined slots 29formed therein and adaptedv to receive the guide pins 3D .which `extend transversely through the channeled porn strip.

Itis important that means be provided for holding'the locking strip 25,in itsbar locking position .sothat thisstrip cannot-be shifted by an unauthorized .person to release the grating bars. Thisis accomplished in the construction shown byproviding, at one end of the strip 25 the latch engaging vprojection 33,.,having a shouldered portion adaptedY toA be engaged by the spring operated latch 34 of the lock 35,.,which lock may be housedin' thechanneled portion 4of the strip 26 and so positioned therein that the spring operated latch 34 will automatically move into locking engagement `with the projection 33 as the strip 25 is moved in an inclined direction to the right, viewing Fig. 5, to the bar locking position.

When it is desired to release the bars I5 it is merely necessary to insert a key in the lock 35 and swing the latch 34 out of engagement with the extension 33 whereupon the strip 25 will be released and may be moved manually to its bar releasing position of Fig. 5. Upon the upper face of the locking strip 25 is preferably provided a spacing member 36 adapted to fill the space between the upper face of the strip 25 and lower inner face of the channeled portion 21 to thereby hold the locking strip 25 against vertical play within its housing.

The upper guide rail I6 and lower guide rail I 1 preferably extend throughout the entire Width of the window so that the pinions of the bars I5 will be held in engagement with the racks I9 and 20 throughout the mevement of these bars j from4 the stored-position of Fig-2 to the Window installed in Windows of various .widths bysimpl-y cutting each rail `to the desired length and .securing these rails in place upon the windowlframe as above described. It will also befseen that the rack and pinion construction herein described forms anY extremely simple means for maintaining the grating barsk I 5 in` parallel relation tog-each other throughout their movement along-theguide rails and that the means herein describedl for locking the lower ends of the bars I5 in the guide rail I1 serves also to lock the upperends ofthe bars y I5` withinl the guide i rail `ISdue to the fact that the upper ends of .these bars cannot-be movedv alongtheguide railwhen thebarS. are prevented from turning by thef lockingrrmeans associated with Ithe guide rail. I1. The lower yguide rail 21, may be. provided with the arrows or other similar marks 31 upon its upper. face to indicate the position the barsv I5should occupy when thesabars have .beenmoved to the Window barring position and are ready to be locked in this position bythe locking strip 25, and the ends of the channeled railsIBandI'I may be closed by theend vplates 38.

I claim:

1. Incombinationwith a window, a grating therefor comprising vertical grating bars, guide railsat the opposite side V.of ysaid bars for supporting the bars in theV Window barring position and for movement-along .the rails Vto a position adjacent the sides of the window, pinions at the opposite ends of the bars, a rack associated with each rail and having the pinions meshed therewithv to maintain the bars in parallel relation to each other as they move alongthe rails, anda locking strip associated with one rack and movable into and out of locking engagement withthe barsto lock them to this rack and eiTect a 'locking action between the other ends of thesebars vand their rack whereby. all grating bars may be locked andreleased lat both ends without' mov- Aing the bars.

2. In combination with a window, a grating therefor comprising vertical gratingbars, -guide rails at the opposite ends of said bars for supportingthe bars in the Window barringv position and for movement along the rails to a position adjacent the sides of the window, pinions at the opposite ends of the bars, a rack associated with each rail and having the pinions meshed therewith to maintain the bars in parallel relation to each other as they move along the rails, and

Alocking means associated with one rack and movable into and out of locking engagement with the bars adjacent this rack to lock the bars to this rack and effect a locking action between the other ends of these bars and their rack whereby all grating bars may be locked and released at both ends without moving the bars.

3. In combination with a Window, a grating therefor comprising vertical grating bars, guide rails at the opposite ends of said bars for supporting the bars in the window barring position and for movement along the rails to a position adjacent the sides of the window, pinions at the opposite end of the bars, a rack associated with each rail and having the pinions held in angagement therewith to maintain the bars in parallel relation to each other as they are moved along the rail, and a locking strip movable into and out of locking engagement with said bars to prevent the pinions at the opposite ends of the bars from traveling along their respective racks whereby all grating bars can be locked and released at both ends without moving the bars.

4. In combination with a window, a grating therefor comprising vertical grating bars, guide rails at the opposite ends of said bars for supporting the bars in the window barring position and for movement along the rails to a position adjacent the sides of the window, pinions at the opposite ends of the bars, a rack associated with each rail, a bar guiding strip upon each rail and positioned to engage a rounded portion of the bars to hold the pinions in mesh with the racks to maintain the bars in parallel relation with each other, and a locking strip associated with one rack and movable into and out of locking engagement with the bars to lock them in place through the racks and pinions.

` BERNARD A. MCGUINNESS.

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